4. Which expression is a simplified form of -5(8x)?
a. 40x
b. -40%
C. 3x
d. -40x?

Answers

Answer 1

Answer:

Option d

Step-by-step explanation:

-5(8x)

= -5×8×x

= -40x

Answered by GAUTHMATH


Related Questions

"A simple random sample of 49 8th graders at a large suburban middle school indicated that 84% of them are involved with some type of after school activity. Find the margin of error associated with a 98% confidence interval that estimates the proportion of them that are involved in an after school activity."'

Answers

Answer:

The margin of error associated with a 98% confidence interval that estimates the proportion of them that are involved in an after school activity is of 0.1219.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is of:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

A simple random sample of 49 8th graders at a large suburban middle school indicated that 84% of them are involved with some type of after school activity.

This means that [tex]n = 49, \pi = 0.84[/tex]

98% confidence level

So [tex]\alpha = 0.02[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.02}{2} = 0.99[/tex], so [tex]Z = 2.327[/tex].  

Margin of error:

[tex]M = 2.327\sqrt{\frac{0.84*0.16}{49}} = 0.1219[/tex]

The margin of error associated with a 98% confidence interval that estimates the proportion of them that are involved in an after school activity is of 0.1219.

In a group of 120 people, 90 play volleyball, 72 play football and 1o play neither of games. Find the number of people who play volleyball as well as football. Construct Venn-diagram to represent the given information.

Answers

Answer:

Step-by-step explanation:

10 people don’t play volleyball 120-10=110 110 play one or both games 90+72 =162 which is > 110 by 52

There are 52 people who play volleyball as well as football.

The Inclusion Exclusion Principle

Let A, B be two different sets the,

n (A ∪ B) = n (A) + n (B) − n (A ∩ B) .

What is Venn diagram?

"A Venn diagram is a diagram that uses overlapping shapes to illustrate the logical relationships between two or more sets."

For given situation:

Let set A: People playing volleyball

set B: People playing football

⇒ n(A) = 90

⇒ n(B) = 72

Given group is of 120 people.

10 people play neither of games.

This means, only 110 people play football or volleyball or both.

⇒ n(A ∪ B) = 110

Using the Inclusion Exclusion Principle,

n (A ∪ B) = n (A) + n (B) − n (A ∩ B)

⇒ 110 = 90 + 72 - n (A ∩ B)

n(A ∩ B) = 52

Therefore, 52 people play volleyball as well as football.

Venn-diagram for given information is as shown below.

Learn more about Venn diagram here:

https://brainly.com/question/14344003

#SPJ2

find sine of angle of inclination to the axis is of line y=1/3x√3+3​

Answers

Answer:

1/2.

Step-by-step explanation:

The inclination of the line to the x axis = 1/3*√3

= √3/3.

This is the tangent of the angle.

The sine of the angle =√3/hypotenuse.

The hypotenuse = √( √3)^2 + 3^2)    (By the Pythagoras theorem)

= √12

= 2√3

Therefore the required sine is  √3/  2√3

= 1/2.

I think that's what you want!!

(8) The average daily temperatures in July of some cities in Texas are shown in the table. Which
of the following fiets the cities from greatest temperature to least temperatura
City
Average Daily
Temperature
Austin
84.52F
Dallas
85.9°F
San Antonio
85 F
Fort Worth
85.31°F
a. Dallas, Fort Worth, San Antonio, Austin
b. Austin, Dallas, San Antonio, Fort Worth
c. Austin, San Antonio, Fort Worth, Dallas
d. Dallas, San Antonio, Fort Worth, Austin

Answers

Answer:

A.

Step-by-step explanation:

85.9 > 85.31 > 85 > 84.52

Dallas, Fort Worth, San Antonio, Austin

plzzz helpppp due today

Answers

Answer:

3 sqrt(3)

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp side / hyp

sin 60 = ZY / 6

6 sin 60 = ZY

6 (sqrt(3) /2) = ZY

3 sqrt(3) = ZY

Justin packed two suitcases for his trip and compared the weights of the items he packed in each of the suitcase.

Answers

Answer:

I am currently taking a unit test and I just got this question. I believe it is the answer but I haven't submitted yet.

Step-by-step explanation:

The answer I chose seems to be the only logical answer.

Use trigonometric identities to solve each equation within the given domain.
4cos4(x) – 5cos2(x) + 1 = 0 from [0, 2π). PLEASE SHOW WORK!!!

Answers

4cos ^4(x) -5cos^2(x)+1=0(u^-1) (4u^-1)=0(u^-1)=0u^=1u=√1u=1u=±1cos (x)=±1x=0 or π4u^-1=04u^=1u^=1/4u=√1/4u=1/2u= ±1/2cos (x)=±1/2x= π/3 or 4π/3x= 0, π/3, π, 4π/3

simplify 16/18+(-16)/27 answer immediately​

Answers

[tex]\boxed{\large{\bold{\textbf{\textsf{{\color{blue}{Answer}}}}}}:)}[/tex]

8/27

see this attachment ☝☝

Answer:

8/27

Step-by-step explanation:

Step 1: G_ _ gle

  Answer: 8/27

HELP PLEASE THANK YOU SO MUCH BRAIN FOR CORRECT

Answers

Answer:

A: Only (2,3)

Step-by-step explanation:

1. 3-3 = 5(2-2) WORKS! (2,3)

2. 2-3 = 5(3-2) Does not work :(

Answer:

Only A

Step-by-step explanation:

If you plug in x or y into the equation, only (2, 3) works

can i get the answer quick

Answers

Answer:

p^3 - 7p^2q^2 + 2pq

Step-by-step explanation:

3pq +5p^2q^2 + p^3 = p^3 + 5p^2q^2 + 3pq

Let the number be x.

x + p^3 + 5p^2q^2 + 3pq + p^3 - pq

= 3p^3 - 2p^2q^2 + 4pq

x + p^3 + p^3 + 5p^2q^2 + 3pq - pq

= 3p^3 - 2p^2q^2 + 4pq

x + 2p^3 + 5p^2a^2 + 2pq

= 3p^3 - 2p^2q^2 + 4pq

x

= 3p^3 - 2p^2q^2 + 4pq - (2p^3 + 5p^2q^2 + 2pq)

= 3p^3 - 2p^2q^2 + 4pq - 2p^3 - 5p^2q^2 - 2pq

= 3p^3 - 2p^3 - 2p^2q^2 - 5p^2q^2 + 4pq - 2pq

= p^3 - 7p^2q^2 + 2pq

Therefore,

p^3 - 7p^2q^2 + 2pq should be added.

Given P(B | A)=0.75, P(A ∩ B)=0.15, P(B’)=0.7, find P(A ∪ B)

Answers

By definition of conditional probability,

P(B | A) = P(A ∩ B) / P(A)

==>   P(A) = P(A ∩ B) / P(B | A) = 0.15/0.75 = 0.2

By definition of complement,

P(B') = 1 - P(B)

==>   P(B) = 1 - P(B') = 1 - 0.7 = 0.3

Now by the inclusion/exlcusion principle, we have

P(A U B) = P(A) + P(B) - P(A ∩ B)

==>   P(A U B) = 0.2 + 0.3 - 0.15 = 0.35

One number is larger than another by 9. If the greater number is increased by 10, and the lesser number is tripled, the sum of the two would be -41. What are the two numbers

Answers

Answer:

The larger number is -6, the smaller number is -15

Step-by-step explanation:

We have two numbers, a and b.

We know that one number is larger than another by 9.

Then we can write:

a = b + 9

then a is larger than b by 9 units.

If the greater number is increased by 10 (a + 10) and the lesser number is tripled (3*b), the sum of the two would be -41:

(a + 10) + 3*b = -41

So we got two equations:

a = b + 9

(a + 10) + 3*b = -41

This is a system of equations.

One way to solve this is first isolate one variable in one of the two equations:

But we can see that the variable "a" is already isolated in the first equation, so we have:

a = b + 9

now we can replace that in the other equation:

(a + 10) + 3*b = -41

(b + 9) + 10 + 3*b = -41

now we can solve this for b.

9 + b + 10 + 3b = -41

(9 + 10) + (3b + b) = -41

19 + 4b = -41

4b = -41 -19 = -60

b = -60/4 = -15

b = -15

then:

a = b + 9

a = -15 + 9 = -6

a = -6

The Area of a room (rectangle) is 320 square feet. If the length is 20 in, what is the perimeter?

Answers

Answer:

72 sq ft

Step-by-step explanation:

A = l × w

320 = 20w

------    ------

20       20

16    =    w

16 + 16 + 20 + 20

^      ^

  32 + 20 + 20

            ^       ^

    32 + 40

         72

The perimeter is 72 square feet.

Hope this helped.

Write the slope of the line plz help me show the work

Answers

Answer:

2/5

Step-by-step explanation:

slope = rise/run

rise is a vertical distance

run is a horizontal distance

We need to find the rise and run between two points on the line.

Look at the point where the line crosses the y-axis. We need to go to another point on the line by going only vertically and horizontally.

Now start at that point, go 2 units up. The rise = 2. Now turn right and go 5 units to the right. The run = 5. You got to another point on the line.

rise = 2

run = 5

slope = rise/run

slope = 2/5

See the picture below.

I got H / 75 but I might be wrong any confirmation ​

Answers

Answer:

30

Step-by-step explanation:

Angle PNM = 180-105

                   = 75

IF PM = PN  then

<PNM = <PMN = 75

<PMN + <PNM + <P = 180 since they form a triangle

75 + 75 + x = 180

150+x = 180

x = 180-150

x = 30

Answer:

<MPN = 40°

Step-by-step explanation:

180° - <PNQ = <PNM ( Angles in a straight line )

180° - 105° = 75°

<PMN = < PNM = 75°

<PMN + <PNM + <MPN = 180°

75 ° + 75° + <MPN = 180°

<MPN = 180° - 150°

<MPN = 30°

In circle D, which is a secant?
G
F
С
Н
Оооо
В 12 13
E
В

Answers

Answer:

GH

Step-by-step explanation:

A secant is a straight line which cuts the circle at 2 points

GH and FE both do this but FE is a special secant, that is the diameter

Then GH is a secant

How do you solve this?
rs/a = k for r

Answers

Answer:

Step-by-step explanation:

In  [tex]\frac{rs}{a}=k[/tex] begin by multiplying both sides by a to get

rs = ak  and divide away the s to get

[tex]r=\frac{ak}{s}[/tex]

HELP PLEASEEEEEEEEEEEEEEEEEEEE

Answers

Answer:

3 9/50

Step-by-step explanation:

3.18 is 3 18/100

Simplifying it further you get: 3 9/50

Answer:

3 9/50

OAmalOHopeO

The exchange rate for converting US dollars to Chinese yuan is $6.11 how much is US$600 worth in China

Answers

Answer:

96 yuan

Step-by-step explanation:

We know how much one yuan is, so we can convert that to $1, Then multiply by 600. To find a USD, we need to divide the yuan by the dollar.

[tex]1/6.11=0.16[/tex]

Now we have a full dollar, and we need to multiply the yuan by 600 to get our 600 dollar value.

[tex]0.16*600=96[/tex]

If ax + x^2 = y^2 -at , what is the value or x and y?
A) y-x
B) x-y
C) x+y
D) x^2 + y^2 / x-y

Answers

Answer:

dx. = yex ⇒ dy y. ∫. = x ... 2 xx dx. ∫. , i.e. yx = 4. 4 x c. +. Hence y = 3. 4 x c x.

which expression is in the simplest form of 4x^3+x^2+2(x^3-3x^2)
a. 4x^3-6x^2
b. 6x^3-6x^2
c. 2x^3-6x^2
d. 6x^3-5x^2

Answers

Answer:

It's D.  6x^3-5x^2

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

4x^3+x^2+2(x^3-3x^2)

4x^3 + x^2 + 2x^3 -6x^2 (Distributed 2 through the parenthesis)

= 6x^3 -5x^2

Answered by Gauthmath

What point lies on the line with point slope equation y-3=4(x+7)?

Answers

Answer:

(-7, 3)

General Formulas and Concepts:

Algebra I

Point-Slope Form: y - y₁ = m(x - x₁)

x₁ - x coordinate y₁ - y coordinate m - slope

Step-by-step explanation:

Step 1: Define

Identify

y - 3 = 4(x + 7)

↓ Compare to Point-Slope Form

Point (-7, 3)

Slope m = 4

Find linear models for each set of data. In what year will the two quantities be​ equal? x y 1970 67.8 1975 69.6 1980 70.5 1985 71.4 1990 72 1995 72.4 2000 74.1

Answers

Answer:

The graph solution is defined in the attachment file please find it.

Step-by-step explanation:

The first line equation:

[tex]\to Y= 0.22x + 67.5\\\\[/tex]

The second line equation:

[tex]\to Y= 0.15x + 75.507\\\\[/tex]

Intersection points:

[tex]\to (114.387,92.665)\\\\[/tex]

By adding the value of the first year (1970) into the x-value that is

[tex]\to 114.387+1970=2084.387[/tex]

The sum of a number and 5 decreased by twice the number.

Answers

Answer:

-x+5

hope this help!!!

Step-by-step explanation:

SOMEONE PLEASEEE HELP MEEE OUTTTT!!!

Answers

Answer:

cos x= 11/19

x=54.62

Step-by-step explanation:

use cosine to find the angle

helppppp the question is on the image.​

Answers

Answer:

12,6,4,3

Step-by-step explanation:

factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

if you take 12,6,4,3 and add them together they equal 25 which is greater than 21 but less than 30

Answer:

3, 4, 9, and 12

3, 6, 6, and 12

Step-by-step explanation:

First, list out the factors of 36.

1, 2, 3, 4, 6, 9, 12, 18, and 36

The combinations of 4 numbers could be:

9 and 4, and 12 and 3  =  28

6 and 6, and 12 and 3  =  27

This Venn diagram shows the pizza topping preferences for 9 students.
What elements are in A and B?
(Look at picture)

Answers

Answer:

I think the answer is C.

Someone please help me I got those three red boxes incorrect so many times

Answers

Hi there!

-10-2 is equal to -12, not -8. This changes everything.

The fraction would be -12/16, which simplifies to -3/4.

I hope this helps!

Answer:

1st red box:

-10 - 2 = -12

2nd box above:

-3

3rd box:

4

Simplify each of the following:
a) root25 + root50 - root24 + root49

b) root2(2root8 – 3root32 + 4roor50)
Show your work

Answers

Answer:

a)

√25 + √50 - √24 + √49 =5 + 5√2 - 2√6 + 7 = 12 + 5√2 - 2√6

b)

√2(2√8 – 3√32 + 4√50) =2√16 - 3√64 + 4√100 = 2*4 - 3*8 + 4*10 = 8 - 24 + 40 = 24

Answer:

a.) 12 + 5√2 - 2√6

b.) 24

Step-by-step explanation:

a) √25 + √50 - √24 + √49

√25 + √50 - √24 + √49

Calculate the square root .

5 + √50 - √24 + 7

Simplify the radical expression.

5 + 5√2 - 2√6 + 7

Combine like terms.

5 + 7 + 5√2 - 2√6 12 + 5√2 - 2√6

b.) √2 ( 2√8 - 3√32 + 4√50 )

√2 ( 2√8 - 3√32 + 4√50 )

Simplify the radical expression.

√2 ( 4√2 - 3 × √2 + 20√2)

Evaluate the power.

√2 ( 4√2 - 3 × 4√2 + 20√2)

Calculate the products.

√2 ( 4√2 -12√2 + 20√2)

Combine like terms.

√2 × (4 - 12 + 20 )√2√2 × 12 √ 2

Multiply.

2 × 12 24

what is the length of de

Answers

Answer:

x = 6

Step-by-step explanation:

Since <F = <F, this shows that the triangles are similar. Therefore:

XZ/DF = XY/DE

12/8 = 9/X

Cross multiply

12X = 9*8

12X = 72

X = 72/12

X = 6

Hence the value of x is 6

Other Questions
Little Hazel had a painful cavity filled the last time she was atthe dentist. The next dental visit, she begins to cry when thedental assistant walks out and calls her name. Provide arationale for her behavior based on classical conditioningprinciples. Be sure to use behavioral terms in your answer(US, UR, NS, CS, and CR should be identified for full credit). e) Stage of Science and Technology important Father bought x sweets.(x-4) were eaten by the children and 20 were left. How many sweets did thier father bought? What is the equation of the graph?y = 4xy = 1/4xy = -1/4xy = -4x 3 to the power 10=Pls answer fast In the absence of oxygen, the pyruvic acid produced duringglycolysis is converted to co, and A. water B glycerol.ethanolD. citric acid Nucleic acids are biomolecules that createO DNA and RNAO glucoseO cholesterolO hormones When Reba lists the Chandlers home in the MLS, she will categorize it as a ______. a. Retro-commissioned structure b. Townhome c. Converted structure d. Single-family home 2. If the Chandlers sell the home at this time, is it likely that they will have a capital gains tax obligation? a. Yes, if they sell the home for more than $500,000. b. Yes, if they sell the home for a net capital gain. c. No, as long as the gain does not exceed $500,000, assuming that they are filing a joint return. d. No, because the sale of a primary residence is not subject to capital gains tax. Chapter 4 Home Ownership The speed limit is 55mph. How far can you travel in 3 hours going the speed limit? How far can you travel if you went 5 miles over the speed limit? Grays Company has inventory of 25 units at a cost of $6 each on August 1. On August 3, it purchased 35 units at $11 each. 27 units are sold on August 6. Using the FIFO perpetual inventory method, what amount will be reported as cost of goods sold for the 27 units that were sold? if ABCD is a parallelogram,find m>D and angle C=(9-1) and angle A=(13-25) i need help measure of each labeled angle In at least 150 words, explain why Armand asks Dsire to leave. What does this say about his character and about thesocial norms of the time?PLEASE I HAVE THIS DUE How are most sexually transmitted infections (STIs) spread? Select four options. ( HELP PLEASE :'< )Which sentence best describes the character Jeremy in Acceptance?a. He prefers to do things in his own special way.b. He cares deeply about how other people feel.c. He is determined to rebel against his parents.d. He doesn't seem to recognize his own problems. Outline five ways of varying the force on a current-carrying conductor in a magnetic field. (7 marks) At the beginning of 2009 Marilyn invested $5000 in a savings account account pays 4% interest per year at the end of the year at the interest is paid how much does Marilyn have in the account? HELP QUICK!!!! JFKWOFKWKOFKECKEOVKEMKFMEKGONGKSIFNDKDKSKEKNFSW Aline segment may have more than one midpoint.A. TrueB. False The perimeter of a square is 20 ft. If you increase the length square by 2 feet and decrease the width by 1 foot, what is tb area, in square feet, of the new figure